Analysis of 89 amniotic samples using fluorescent in situ hybridization / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To assess the value of fluorescent in situ hybridization (FISH) for detecting common chromosome aneuploidies in interphase nuclei of amniotic fluid cells.</p><p><b>METHODS</b>Eighty two uncultured amniotic fluid samples and supernatants from 2 successfully and 5 unsuccessfully cultured amniotic fluid samples were analyzed with FISH. Results from standard cytogenetic analysis of 79 uncultured amniotic fluid samples and 2 successfully cultured amniotic fluid samples were compared with FISH results.</p><p><b>RESULTS</b>All of the 89 samples were succeeded analyzed with FISH. Positive findings included 3 cases with trisomy 21, 1 case with 47, XYY and 1 case with 69, XXX, which were consistent with results of karyotype analysis.</p><p><b>CONCLUSION</b>FISH is a rapid and accurate method for prenatal diagnosis, and can also provide a remedy to failed amniotic fluid cells culture.</p>

Expressed sequence tags analysis of a liver tissue cDNA library from a highly inbred minipig line / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Porcine liver performing efficient physiological functions in the human body is prerequisite for successful liver xenotransplantation. However, the protein differences between pig and human remain largely unexplored. Therefore, we investigated the liver expression profile of a highly inbred minipig line.</p><p><b>METHODS</b>A cDNA library was constructed from liver tissue of an inbred Banna minipig. Two hundred randomly selected clones were sequenced then analysed by BLAST programme.</p><p><b>RESULTS</b>Alignments of the sequences showed 44% encoded previously known porcine genes. Among the 56% unknown genes, sequences of 72 clones had high similarities with known genes of other species and the similarities to human were mostly above 0.80. The other 40 clones showing no similarity to genes in National Centre for Biotechnology Information are newly discovered, expressed sequence tags specific to liver of inbred Banna minipig. Twenty-two of the 200 clones had full length encoding regions, 38 complete 5' terminal sequences and 140 complete 3' terminal sequences.</p><p><b>CONCLUSION</b>These newly discovered expression sequences may be an important resource for research involving physiological characteristics and medical usage of inbred pigs and contribute to matching studies in xenotransplantation.</p>